Hay-grinding machine.



J. F. LANGDON.

HAY GRINDING MACHINE. APPL'IOATION FILED MAR. Q1, 1908.

909,914. Patented Jan. 19, 1909.

Ja/c l6 f/a lfgdolz B Y I WITNESSES:

IN VEN'IOR.

kinds of cured hay and the like, suc

JOHN. F. LANGDON, OEWIOHITA, KANSAS.

HAY-GRINDING MACHINE.

Specification of Letters Patent.

Patented Jan. 19, 19.09.

Application filed March 21, 1908. Serial No. 422,494.

To all whom it may concern:

it known that I, JOHN F. LAncnoN. cit zen of the United States, residingat \Vrchita, in the county of Sedgwick and State of Kansas, haveinvented certain new and useful Improvements in Hay-Grinding Machines,of which-the following is a specification.

The present invention contemplates a novel machine for cutting andgrindi all as timothy, clover, alfalfa or prairie hay.

The object of the invention is to des' 11 a simple and inex ensivemachine of this aracter which wil operate in an effective manner toproduce the desired results and which embodies means for feeding the bayto the cutters and conveying the hay from the machine after passingthrough the same.

reference characters.-

For a full. description of the invention and the merits thereof and alsoto acquire a knowledge of the details of construction and the means foreffecting the result, reference is to be had to the following descrition and accompanyingdrawings, 1n whic 1:

Figure 1 isa side elevation of an improved hay cutting and grindingmachine embodying the invention, portions being broken away. Fig.2 is anend View of the same, portions being broken away. Fig. 3 is a top planview, portions being broken away. Fig. l is a plan view of one of thebars of the grinding shell. Fig. 5 is a side view of the same. Fig. 6 isan enlarged transverse sectional view on the line 6-6 of Fig. 4.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the sameReferring to the drawing the numeral 1 designates the casing withinwhich the cutting and grinding'mechanism is mounted, the upper portionof the casing communicating with an inlet or feed opening 2 throughwhich the hay is conveyed to the cooperating sets of rotary knives 3 and4:- In the present 'instance'a belt conveyor 5 is shown as mountedwithin the inlet and serves to feed the hay to the machine. The sets3and l of rotary cutter knives are keyed upon the shafts 8 and 4' reseetively, the shaft 7 being located above an knives a being rotated at ahigher speed than the knives so as to eoone'rate with the latter inaneffective manner to cut the hay into small pieces.

to one side of the shaft. 6 and the As shown on the drawing the shafts 6and 7 are connected by the gearing 8, and

the shaft 6 receives motion through the medium of a belt 9 from athird-shaft 10 having the toothed grinding drum 11 mounted thereon.After being operated upon by the rotary knives the hay drops upon thedrum 11 and is ground between the same and a shell 12' until itbecomes'suificiently fine to pass through openings in the shell,

- Specifically describing the construction of the shell which partiallysurrounds the drum it will be observed that the same is composed of aplurality of longitudinal bars 12 fitted side by side and having theirextremities se- -cured to flanges l3.upon opposite sides of the casingl. The longitudinal edges of the bars 1:2 are formed w th the rearwardlyextending flan es 14 which serve-as stiffening ribs. to reinfhrce thebars and may be utilhead if desired in fastening the bars together. Theinner face of each of the bars 12 is provided with the diagonal ribs 15which are inclined in opposite directions at opposite ends of the bar,the channels between the ribs tending to convey the hay toward the.center of the machin'e as the 'drum revolves and being in communicationwith the outlet opening 16 throu h which the finely ground hay isdischarge into the bottom of the casing. It. will also be observed thatthe shell 12 is provided with the inwardly projecting teeth 17 arrangedin cooperative relation to the teeth 18 u on the drum 11. With thisconstruction it will .be obvious that as the hay is fed into the machineit is first acted upon by the rotary knives 3 and it-which cut it upinto small particles which are dropped upon the rotary drum'll. Theseparticles are then ground between the drum and the shell 12 until theyhave been reduced to such a do as of tinencss as to pass through the outet openings 10. It may be mentioned here that these openings 16 areflared outwardly so as to prevent choking. The side of the casing l isalso provided with a door 19 which-can be opened as indicated by dottedlines in Fig.

1 should it be desired to examine the grin in drum and shell toascertain how the machine operating. After passing through "the outletopenings 16'of the shell 12 the finely ground hay may be withdrawneither by section or by a conveyor of any suitable type, the formerbeing preferable since it operates to withdraw the dust from t the ings16, after which it' s carried from the drum and shell. In the presentinstance the finely ground hay discharged from the, shell is depositedin a trough-20 at the bottom of the casing and is removed from thetrough by means of a screw conveyer 21 mounted therein. It will thus beobvious that after the hay is placed upon the belt conveyer 5 it is fed'to the rotary cutting knives and dropped from them upon the drum 11which cooperates with the shell 12 to grind the hay until it passesthrough the discharge opencasing by means of the conveyer 21.

Having thus described the invention, what is claimed as new is:

1. In a device of the character described, the combination of a casing,cutting knives mounted in the upper portion of the casing. means forfeeding the hay to the knives, a grindin drum journaled within thecasing below t e cutting knives, a shell partially surrounding the drumand cooperating therewith to act upon the hay dropped from the cuttingknives, the said shell being provided upon its inner face with ribs andalso being provided with openings between the ribs, and means forwithdrawing the hay from the casing after it has been acted upon by thedrum.

2. In a device of the character described, the combination of a casingprovided at opposite sides with inwardly projecting flanges, cuttingknives mounted within the casing. means for feeding hay to the cuttingknives, a grinding drum journaled within the casing below the cuttingknives, a shell coiiperating with the grinding drum to act upon; the haydropped from the cutting knives, the said shell being formed of aplurality of bars secured to the before mentioned flanges projectinginwardly from opposite sides of i the casing, and means for withdrawingthe hay from the casing after being acted upon by the grinding drum.

3. In a device of the character described, i the combination of a casingprovided at op l in presence of two'witnesses.

the combination of'a casing provided with an inlet, a conveyer beltmounted within the nlet, two sets of cooperating knives arranged withinthe casing fon receiving hay from .the before mentioned conveyer belt,

grinding drum journaled within the casing' below the cutting knives,a-shell parttally surrounding the grinding drum for cooperationtherewith to act uponthe hay dropped fronthe cutting knives, the saidshell being composed ofa plurality of bars and being provided upon itsinner face with ribs,- and means for removing from the easing, the haydischarged from the grinding drum a shell.

5. In a device ofthe character described, the combination of a cut-tingmeans, a grinding drum mounted in cotiperative relation to the cuttingmeans, and a shell partially surrounding the grinding drum, the saidshell being provided with diagonal ribs inclined 111 opposite directionsat the opposite ends thereof so as to have adendency to move the haytoward the center of the shell, and also being provided betweeh the ribswith discharge openings. 1

In testimony whereof I allix my signature JOHN F. LANGDON. [n s.]Witnesses:

J. WV. 13100:),

U. G. CHARLES.

